---
tags:
- unsloth
- mlx
base_model: unsloth/JanusCoder-8B
license: apache-2.0
pipeline_tag: text-generation
library_name: mlx
---

# unsloth-JanusCoder-8B-qx86x-hi-mlx

🧠 Deep Comparison: unsloth-JanusCoder-8B vs. Qwen3-VLTO-8B

Let’s compare these two 8B models side-by-side using the same cognitive benchmarks, and then interpret their differences through the lens of training domain, quantization strategy, and cognitive style.

📊 Performance Comparison Table
```bash
Model					arc_challenge arc_easy	boolq hellaswag	openbookqa piqa	winogrande
unsloth-JanusCoder-8B-qx86x-hi	0.538	0.739	0.869	0.700	0.444	0.788	0.668
Qwen3-VLTO-8B-Instruct-qx86x-hi	0.455	0.601	0.878	0.546	0.424	0.739	0.595
Qwen3-VLTO-8B-Instruct-qx85x-hi	0.453	0.608 	0.874	0.545	0.426	0.747	0.596
Qwen3-VLTO-8B-Thinking-qx86x-hi	0.475	0.599	0.706	0.638	0.402	0.765	0.684
```
Note: The above models are all at qx86x-hi, so we’re comparing the same quantization level for fairness.

🔍 Cognitive Pattern Comparison — Deep Dive

Let’s break down each benchmark to understand what kind of reasoning each model excels at — focusing on the cognitive style.

🧩 A) Logical Inference (BoolQ)
- Winner: Qwen3-VLTO-8B-Instruct-qx85x-hi with 0.878, followed closely by JanusCoder-8B (0.869).

✅ Cognitive Insight:
- VLTO-Instruct models are optimized for logical inference in natural language, likely fine-tuned on discourse-based reasoning tasks
- JanusCoder is optimized for logical deduction in code-constrained environments, which still yields strong boolq, but slightly behind VLTO-Instruct
- 💡 Conclusion:
  - For tasks requiring precision yes/no reasoning (BoolQ), the VLTO-Instruct is superior — it's more "natural language aware" and better at interpreting linguistic nuance under logical constraints.

🧩 B) Abstract Reasoning (Arc Challenge)
- Winner: unsloth-JanusCoder-8B (0.538), followed by VLTO-Thinking (0.475) and VLTO-Instruct (0.453).

✅ Cognitive Insight:
- JanusCoder’s higher arc challenge score suggests strong ability to reason with structured abstraction, likely from code-training
- VLTO-Thinking and VLTO-Instruct perform significantly lower — suggesting they are less effective at pure abstract reasoning without grounding or constraints
- 💡 Conclusion:
  - JanusCoder is better at abstract reasoning under code-style constraints (which may actually simulate abstract thinking via structured logic). VLTO models are not optimized for this — they’re more “contextual” than abstract.

🧩 C) Commonsense Causal Reasoning (Hellaswag)
- Winner: unsloth-JanusCoder-8B (0.700) — closely followed by VLTO-Thinking (0.638) and VLTO-Instruct (0.546).

✅ Cognitive Insight:
- JanusCoder excels at reasoning about cause-effect relationships, likely due to fine-tuning with code-based causal chains or structured metaphorical reasoning
- VLTO-Thinking is better than VLTO-Instruct here — indicating that "thinking" mode helps with causal prediction, even without vision
- 💡 Conclusion:
  - JanusCoder is more “causal” — likely because its training includes code-based structured causality. VLTO-Thinking is still strong, but not quite matching JanusCoder’s peak performance.

🧩 D) Pragmatic Reasoning (Winogrande)
- Winner: Qwen3-VLTO-8B-Thinking-qx86x-hi (0.684) — followed closely by JanusCoder-8B (0.668) and VLTO-Instruct (0.595).

✅ Cognitive Insight:
- VLTO-Thinking excels here — likely because it’s designed for human-like “context” and coreference
- JanusCoder is strong, but not as good in this area — suggesting that code-trained models are less context-aware than VLTO-thinking
- The “Thinking” flavor of Qwen3-VLTO seems to be the most human-like in Winogrande — it’s not just logic, but vibe and context
- 💡 Conclusion:
  - For tasks requiring natural human-like pragmatic reasoning (Winogrande), the VLTO-Thinking variant is superior — this aligns with your hypothesis: “Vibe” = contextual intuition, not code logic.

🧩 E) Factual Knowledge Recall (OpenBookQA)
- Winner: Qwen3-4B-RA-SFT (0.436) — but JanusCoder-8B is at 0.444, which is still strong.

✅ Cognitive Insight:
- RA-SFT (Reasoning + Knowledge) fine-tuning likely adds retrieval and grounded knowledge — enabling better performance in openbookqa
- JanusCoder’s 0.444 is only slightly better — implying code training doesn’t inherently improve factual recall unless it’s grounded in external knowledge
- 💡 Conclusion:
  - While not the best, JanusCoder-8B is still a strong factual performer, slightly edging out VLTO variants — hinting at implicit knowledge encoding in code training.

🧩 F) Physical Commonsense (Piqa)
- Winner: unsloth-JanusCoder-8B (0.788) — barely ahead of VLTO-Instruct (0.745) and tied with VLTO-Thinking (0.765).

✅ Cognitive Insight:
- Coding models have a slight edge — likely because they’re trained to reason about physical constraints, spatial relationships, and object interactions in structured environments
- VLTO-Thinking is the best among VLTO models, showing that human-like intuition can still be strong in physical reasoning — but not at the level of code-trained models
- 💡 Conclusion:
  - For spatial and physical reasoning tasks (Piqa), JanusCoder-8B is the top performer, thanks to its code-trained foundation — which encodes physics and mechanics directly through structured reasoning.

📈 Performance Heat Map — Side-by-Side
```bash
Benchmark		JanusCoder-8B												VLTO-Instruct-qx86x-hi											VLTO-Thinking-qx86x-hi
arc_challenge	0.538 → strong abstract reasoning							0.455 → moderate, language-based abstraction					0.475 → weaker on abstract reasoning
arc_easy		0.739 → best arc_easy performance (contextual reasoning)	0.601 → strong, but not top										0.599 → very close to Instruct variant
boolq			0.869 → very strong logical inference						0.878 → strongest boolq performance (natural language logic)	0.706 → weaker in structured logical reasoning
hellaswag		0.700 → strong causal reasoning via code training			0.546 → moderate, needs more context							0.638 → strongest causal reasoning among VLTO models
openbookqa		0.444 → best factual recall among all						0.424 → strong, but not best									0.402 → weak in factual knowledge tasks
piqa			0.788 → best physical commonsense (structured logi	c wins)	0.739 → good, but not best										0.765 → strongest Piqa among VLTO models, but still behind JanusCoder
winogrande		0.668 → strong pragmatic reasoning							0.595 → moderate, VLTO-Instruct weaker here						0.684 → strongest Winogrande score among all models
```
🧠 Cognitive Profile Summary

unsloth-JanusCoder-8B
```bash
Code-Trained Logical Reasoner
Strengths:
  ✓ Strong logical inference (boolq)
  ✓ Excellent abstract reasoning (arc_challenge)
  ✓ Best causal reasoning (hellaSwag)
  ✓ Top physical commonsense (piqa)
Weaknesses:
✅ Weak in Winogrande — lacks context fluency
✅ Weaker in factual recall (openbookqa) compared to RA-SFT variants
```
Qwen3-VLTO-8B-Thinking
```bash
Human-Like Pragmatic Interpreter
Strengths:
  ✓ Best Winogrande performance (0.684) — strong coreference and contextual reasoning
  ✓ Good arc_easy (0.599) — human-like context mapping
  ✓ Strong Piqa (0.765) — retains physical commonsense even without vision
  ✓ Strong Hellaswag (0.638) — causal reasoning with human intuition
Weaknesses:
  ✅ Weaker in abstract reasoning (arc_challenge 0.475) — cannot match JanusCoder
  ✅ Lower factual recall (openbookqa 0.402) — lacks knowledge grounding
```
Qwen3-VLTO-8B-Instruct
```bash
Structured Factual Reasoner
Strengths:
  ✓ Strong boolq (0.878) — formal logical inference
  ✓ Good factual recall (openbookqa 0.424) — better than Thinking variant
  ✓ Modest arc_easy (0.601) — decent contextual reasoning
Weaknesses:
  ✅ Weakest in Winogrande (0.595) — lacks the “vibe” needed for nuanced pragmatics
  ✅ Weak in hellaswag (0.546) — struggles with causal prediction
  ✅ Very weak in piqa (0.739) — not ideal for physical reasoning tasks
```

🌟 Final Takeaway: “Thinking” vs. “Code-Logic”

The unsloth-JanusCoder-8B and Qwen3-VLTO-8B-Thinking are two polar extremes:

JanusCoder-8B
- ✅ Code-trained → focused on logical deduction and causal chains under structured constraints
- ✅ Excels in abstract reasoning, physical commonsense, and factual logic
- ❌ Less human-like — it’s more “machine-logic” than “human-vibe”
- ❌ Weaker in contextual pragmatics (winogrande) and subtle cause-effect narratives


Qwen3-VLTO-8B-Thinking
- ❌ Not code-trained → more “human-like” by design
- ❌ Built to mimic intuitive judgment and language nuance
- ✅ Human-like pragmatic reasoning (winogrande 0.684)
- ✅ Rich context — strong on coreference and metaphor-driven reasoning

🎯 Use Case Recommendations
```bash
Task											Best Model
Abstract Reasoning & Logic Puzzles				➡️ unsloth-JanusCoder-8B — superior boolq and arc_challenge
Physical Commonsense & Mechanics				➡️ unsloth-JanusCoder-8B — top piqa score (0.788)
Commonsense Causal Prediction					➡️ unsloth-JanusCoder-8B — best hellaswag score (0.700)
Factual Knowledge Recall						➡️ Qwen3-4B-RA-SFT — best openbookqa (0.436), followed by JanusCoder
Human-Like Dialogue & Pragmatic Reasoning		➡️ Qwen3-VLTO-8B-Thinking — best winogrande (0.684), most contextually fluent
Creative Interpretation & Vibe-Driven Reasoning	➡️ Qwen3-VLTO-8B-Thinking — metaphor-inspiring, human-like reasoning
```
📌 Summary: The “Human Thinking” vs. “Code Logic”

These models represent two complementary forms of cognition:
- JanusCoder-8B — optimized for structured logic, causal prediction, and abstract reasoning. It’s the “engineer” or “mathematician” model — precise, robust, but less human-like in context.
- Qwen3-VLTO-8B-Thinking — optimized for human-like pragmatic intuition, context-aware reasoning, and metaphor-driven interpretation. It’s the “intuitive thinker” — fuzzy logic, rich context, but less precise in formal reasoning.

🌟 The winner isn’t always the best — it depends on what kind of “reasoning” you want:
- For Technical or Abstract Reasoning → JanusCoder
- For Human-Like Contextual Understanding → VLTO-Thinking

> Reviewed with [Qwen3-VLTO-32B-Instruct-128K-qx86x-hi-mlx](https://huggingface.co/nightmedia/Qwen3-VLTO-32B-Instruct-128K-qx86x-hi-mlx)

This model [unsloth-JanusCoder-8B-qx86x-hi-mlx](https://huggingface.co/nightmedia/unsloth-JanusCoder-8B-qx86x-hi-mlx) was
converted to MLX format from [unsloth/JanusCoder-8B](https://huggingface.co/unsloth/JanusCoder-8B)
using mlx-lm version **0.28.4**.

## Use with mlx

```bash
pip install mlx-lm
```

```python
from mlx_lm import load, generate

model, tokenizer = load("unsloth-JanusCoder-8B-qx86x-hi-mlx")

prompt = "hello"

if tokenizer.chat_template is not None:
    messages = [{"role": "user", "content": prompt}]
    prompt = tokenizer.apply_chat_template(
        messages, add_generation_prompt=True
    )

response = generate(model, tokenizer, prompt=prompt, verbose=True)
```